Area codes 402 and 531 - Alchetron, The Free Social Encyclopedia

Bay Area: Say hello to a new telephone area code

New 341 Area Code Will Require New Dialing Procedure

Scammers Calling from Area Code 509

10-digit dialing for 509 area code calls begins

Act Now to Get Your 510 Area Code, Castro Valley

Area codes 310 and 424 - Alchetron, The Free Social Encyclopedia

East Bay residents: There's more dialing to do in the 510 area code